Improvement in lamp-chimneys



UNITED STATES PATENu(Termec WILLIAM H. BARNARD, OF SEDALIA, MISSOURI.

IMPROVEMENT IN LAM P-CHIMNEYS.

Specification forming part of Letters Patent N0. 165,912, dated July 27,1875; application led January 4, 1875.

To all whom it may concern:

Be it known that I, WILLIAM H. BARNARD, of Sedalia, in the county ofPettis and State of Missouri, have'invented certain new and usefulImprovements Ain Lamp-Chimneys, of which the following is aspecification My invention relates to certain improvements in that classot' lamp-chimneys which are constructed ot' two longitudinal sections,united at their edges, and properly bound or clasped together, for thepurpose of allowing for the expansion and contraction ofthe glass whensubjected to sudden changes of temperture, and preventing the chimneyfrom cracking or breaking.

rlhe object of my invention is to secure a more perfect joint at thepoint of union of the two sections, and provide a more secure andreliable device for binding the two sections together,than has beenheretofore accomplished in the chimneys of this class, as ordinarilyconstructed; and my invention consists in constructing a chimney of twolongitudinal sections or parts, as usual, each section having alongitudinal lange on its edges, which imite and form a longitudinalprojection or edge on the outside of the chimney when the sections arebound together.

By this construction a broad face is obtained along the edges of each.section, which form, when properly ground and placed together, a perfectjoint.

In the drawings, Figure lis a perspective View of my improvedlamp-chimney; Fig. 2, a similar view ot' the same with the end ferrulesremoved. Figs. 3 and 4 are detached views of the top and bottomferrules, respectively', and Fig. 5 is a section on line a; cof Fig. l.

The letters A A represent the sections composing the chimney. Along theedges ot' each section, on the outside, a longitudinal ilange, d, isformed. The faces of these ilanges are accurately ground, so as to forma per- Y fectly tightjoint when the sections are joined together. rlheanges do not extend quite to the end of the sections, but terminate ashort distance from said ends, in order to allow the sections to setinto the annular t'errules which bind them together. These annularferrules are represented by the letters B B. 'llhey are constructed soas to grasp the edges of the sections at their ends, both on the insideand outside, and thus irmly bind them together.

It will be seen that by the ,abo\'e-descrbed construction of thesections a broad face will be formed along the edges ot' the sections atthe point of union, which will allow said edges to be readily andaccurately ground, forming a perfect joint throughout the entire lengthot' the sections, which it has hitherto been found impossible to obtain.

The annular i'errules, by grasping both the outside and inside of thechimney, will prevent any slipping' of the sections, and thusVnecessarily bind them in place.

The chimneys thus constructed are `admirably adapted for packing fortransportation, as the sections will nest together, occupying but littleroom. i

Having thus described my invention, what I claim as new, and desire tosecure by Let- A lamp-chimney constructed of two sections, each of whichis provided with laterally-projecting flanges, substantially asdescribed, whereby, when the sections are placed together, alongitudinal projection is formed and a perfect joint secured, as setforth.

In testimony that I claim the foregoing I have hereunto set my hand andseal.

WILLIAM H. BARNARD. [L. s]

Witnesses:

J. HALL BRowNE, J. S. JAcKsoN.

